Which one of the following statements regarding post-fertilization development in flowering plants is incorrect?
| 1. | Ovules develop into an embryo sac |
| 2. | Ovary develops into fruit |
| 3. | Zygote develops into an embryo |
| 4. | Central cell develops into endosperm |
Which of the following statements is not correct?
| 1. | Lysosomes are formed by the process of packaging in the endoplasmic reticulum. |
| 2. | Lysosomes have numerous hydrolytic enzymes |
| 3. | The hydrolytic enzyme of lysosomes are active under acidic pH |
| 4. | Lysosomes are membrane bound structure. |
In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation, pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red, and pink flowers. Choose the incorrect statement from the following:
| 1. | Law of Segregation does not apply in this experiment. |
| 2. | This experiment does not follow the Principle of Dominance. |
| 3. | The pink colour in F1 is due to incomplete dominance. |
| 4. | Ratio of F2 is 1/4(red):2/4(pink):1/4(white). |
Cells in phase:
1. terminate the cell cycle
2. exit the cell cycle
3. enter the cell cycle
4. suspend the cell cycle
Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by:
| 1. | Phosphofructokinase | 2. | Aldolase |
| 3. | Hexokinase | 4. | Enolase |
Placentation, in which ovules develop on the inner wall of the ovary or in peripheral part, is:
1. Free central
2. basal
3. Axile
4. Parietal
The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by:
| 1. | Sutton Boveri | 2. | T.H. Morgan |
| 3. | Gregor J. Mendel | 4. | Alfred Sturtevant |
From an evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in:
| 1. | Gymnosperms | 2. | Liverworts |
| 3. | Mosses | 4. | Pteridophytes |
Purines found both in DNA and RNA are:
| 1. | Cytosine and thymine | 2. | Adenine and thymine |
| 3. | Adenine and guanine | 4. | Guanine and cytosine |
Which of the following statements is incorrect?
| 1. | Yeasts have filamentous bodies with long thread-like hyphae. |
| 2. | Morels and truffles are edible delicacies. |
| 3. | Claviceps is a source of many alkaloids and LSD. |
| 4. | Conidia are produced exogenously and ascospores endogenously. |
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